Read Sony DAV-DS1000 / ST-DS1000 Service Manual online
4
ST-DS1000
AM Section
Function switch
: AM
FM Section
Function switch
: FM
• Connecting Level Meter (FM and AM)
• Connecting Digital Voltmeter (FM and AM)
AM RF signal
generator
generator
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
signal.
Output level : as low as possible
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
FM RF signal
generator
generator
33.75kHz frequency deviation by
1kHz signal.
Output level : as low as possible
1kHz signal.
Output level : as low as possible
antenna
terminal
terminal
0.01
µ
F
digital
voltmeter
voltmeter
100 k
Ω
TP (VT)
J1100
(
PHONES
)
DVX-DS1000
32
Ω
SA-WS1000
set
ST-DS1000
level meter
(range: 0.5–5 V ac)
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T5
450 kHz
(
) : 9 kHz step (MX)
<
> : 9 kHz step (EXCEPT MX)
no mark : 10kHz step
AM FREQUENCY COVERAGE CHECK
Frequency Display
530 kHz
1,710 kHz
(531 kHz)
(1,710 kHz)
<531 kHz>
<1,602 kHz>
Reading on Digital voltmeter
1.1
± 0.3 V
6.8
± 0.8V
(6.8
± 0.8V)
<6.6
± 0.6V>
Adjustment Part
confirmation
confirmation
<
> : 9 kHz step
no mark : Others
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
T5
620 kHz
<
621
kHz>
1,400 kHz <1,404 kHz>
FM DET ADJUSTMENT
Adjust for a maximum reading on level meter.
T4
10.7 MHz
FM FREQUENCY COVERAGE ADJUSTMENT
Frequency Display
87.5 MHz
108 MHz
Reading on Digital voltmeter
1.5
± 0.2 V
7.8
± 0.8 V
Adjustment Part
confirmation
L7
(
) : AEP, UK
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L2
L4
(L5)
T3
87.5 MHz
87.5 MHz
87.5 MHz
98.0 MHz
FM SD SENSITIVITY ADJUSTMENT
RV1
When FM RF signal generator output level is set to 25 dB
µV,
adjust RV1 so that signal level is high at 6 pin of IC1.
Abbreviation
MX
: Mexican model.
Adjustment Location : TUNER board (See page 5)
0dB = 1
µV
SECTION 1
ELECTRICAL ADJUSTMENTS
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